Philip Hagenaar was a son of Samuel Hagenaar and Anna Dikker. He married Sara Polak in 1929 in Amsterdam.
Stadsarchief Amsterdam, archiefkaart Philip Hagenaar
In addition, a Jokos file (number 32740) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.